Natural cashew apple juice as fermentation medium
for biosurfactant production by Acinetobacter calcoaceticus |
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Authors: | Maria V P Rocha Adriano H S Oliveira Maria C M Souza Luciana R B Gonçalves |
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Institution: | (1) Departamento de Engenharia Química, Universidade Federal do Ceará, Campus do Pici, Bloco 709, CEP: 60455-760 Fortaleza, CE, Brazil |
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Abstract: | The success of biosurfactant production depends on the development of cheaper processes based on the use of low cost raw materials, which account for 10–30% of the overall process cost. In Brazil, the cashew apple agroindustry plays an outstanding role in the local economy. However, only a small part of the pseudofruit produced is used industrially and the amount wasted (about 94%) presents high potential as fermentation media, since it is rich in carbohydrate, fibers, vitamins and minerals salts. In this work, the performance of cashew apple juice (CAJ) as a complex medium for Acinetobacter calcoaceticus growth and production of biosurfactant was investigated. The microorganism was able to grow and to produce biosurfactant on a defined culture medium and on CAJ, reducing the surface tension of both media. The biosurfactant also achieved a maximum emulsion index of 80% for kerosene, when defined medium was used. |
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Keywords: | Biosurfactants Cashew apple juice Submerged fermentation Agro industrial residues A calcoaceticus |
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